<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <script>
    function foo() {
      function bar() {
        function test() {
          console.log(message)
          return test
        }
        return bar
      }
    }
    var bar = foo()
    var test = bar()
    test()
  </script>
</body>

</html>